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OpenStudy (anonymous):
Write the equation of the ellipse 4x2 + 9y2 – 16x – 126y + 421 = 0 in standard form.
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OpenStudy (stamp):
\[4 (x-2)^2+9 (y-7)^2-36 = 0\]
OpenStudy (stamp):
hint: complete the square
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